Exam 2: Ventilation

When Poiseuille's law is rearranged for flow with pressure remaining constant, what impact would reducing the radius of a tube by 50% have on the gas flow?

In the upright position, which portion of the lungs has the most negative pleural pressure?

Who is credited with the following equation: P = (2ST)/r ?

What is the term for the movement of gas from the external environment to the alveoli?

When a tension pneumothorax occurs during positive pressure ventilation, how will the cardiac output and blood pressure affected?

What is the term for the pressure difference that occurs across the airway wall ?

What is the average respiratory rate for a newborn infant?

In a healthy adult at rest, what portion of the total energy output is required for the work of breathing?

Which abnormal breathing pattern is a result of diaphragm fatigue or paralysis?

How do obstructive lung diseases that cause air trapping affect lung compliance?

When a positive pressure breath is delivered from a mechanical ventilator, how would intra-alveolar and intrapleural pressures be affected during inspiration?

What does the sum of anatomic dead space and alveolar dead space equal?

Which of the following can cause pulmonary emboli? ? I. Prolonged inactivity II. Pregnancy and childbirth III. Obesity IV. Hypercoagulation disorders

When rapid ventilatory rates occur, what is the term for the condition in which positive pressure remains in the alveoli during exhalation due to the insufficient expiratory time?

Which sequence represents one respiratory cycle? ? I. Inspiration, expiration II. Inspiration, end-inspiration, expiration, and end-expiration III. Expiration, end-expiration, inspiration, end-inspiration IV. End-inspiration, inspiration, end-expiration, expiration

At sea level under standard conditions, what would the P_B equal in mm Hg ?

What is derived when the pressure difference between the mouth and alveoli is divided by the flowrate?